UMTS VoIP Codec QoS Evaluation

Voice over Internet Protocol (VoIP) has been an interactive subject chosen by most studies. The increase of using real time applications service such as (VoIP) is resulting in the high growth of Telecom and broadband field to meet the request of providing high quality of VoIP at any place, this paper is to analyze and evaluate of an appropriate voice CODEC schemes depending on the Quality-of-Service (QoS) of VoIP in Universal Mobile Telecommunication System (UMTS), network was implemented in OPNET modeler 14.5.